Pipe-wrench



(No Model.)

J. L. TAYLOR.

. PIPE WRENCH, No. 287,193.

Patented Oct. 23, 1883.

J may INVENTOR ATTORNEYS 50 opposite sides, 0 c, which are serrated.

STATES ATENT Fries.

PIPE-WRENCH.

SPECIFICATION forming part of Letters Patent No. 287,193, dated October23, 186:3,

Application filed June 20, 1853. (No model.)

I0 all whom it may concern:

Be it known that I, JAMES L. TAYLOR, of Ishpeming, in the county ofMarquette and State of Michigan, have invented a new and usefulImprovement in Pipe WVrenches, of which the following is a full, clear,and exact description.

The invention consists in a novel construction of said parts, or certainof them, and combinations-of the same, including a reversible fixed head011 the working end of the handle, having opposite conccve serratedgrippingsurfaees, a forked jaw of diverging construction toward the nutto which it is pivoted,

and an improved angular construction of said j aw at its gripping parts,substantially as hereinafter described, whereby increased strength issecured, a better grip is obtained, as also a more extended or variedgripping-surface, and a cheap, simple, and durable wrench having an easyand extensive adjustment is pro duced.

Reference is to be had to the accompanying drawings, forming apart ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

, Figure 1 represents a longitudinal view of a pipe-wrench embodying myinvention; Fi 2, a partly-broken similar View of the same in a plane atright angles to Fig. 1, and Fig. 3 an edge view of a modifiedconstruction of the swinging jaw.

Referring, in the first instance, to Figs. 1 and 2 of the drawings, A isthe shank or metal portion of the handle, fitted with a wooden handholding part or sleeve, A. The protruding metal shank portion A of thehandle is of circular form in its transverse section, and of increaseddiameter, where a screwthread, b, is formed upon it, to provide for thenut B being passed 011 it from the back end of the shank, and to givethe handle increased strength.

The outer or working end of the handle or shank portion A .is formed orfitted with a fixed head, 0, that is or may he of square form at itsbase, where it joins the screw-threaded portion 7), but which is ofreduced tapering construction outward therefrom on two of its This head0 constitutes what may be termed the fixed jaw of the wrench, and bybeing serrated on opposite sides it is made reversible each halfturn ofthe handle; and, if desired, its opposite serrated sides may be atdifferent angles to suit different kinds of work. This reversibleprovision of the head or fixed jaw-- that is, jaw in solid connectionwith the handlegives a more varied gripping-surface, and consequentlyreduces 'wear. Furthermore, the serrated surfaces 0 c of said head areconcave in direction of the length of the head, thereby giving a betterhold or grip than if the same were convex. The sloping configuration ofthe surfaces 0 0 should be such as to adapt said surfaces to the largestpipe the wrench is designed for.

The screw-threaded portion 1) of the handle should be twice the length,or thereabout, of the nut B, which fits thereon, or otherwisesufficiently long to allow of the head 0 moving outward to close withthe swinging jaw D.

The nut B, which is a long one, has two of its opposite sides flattened,to form bearings for the forked ends dd of the swinging jaw D, pivotedat c to the nut. Said forked end portions, (1 d, are made divergingtoward the nut, thus giving an increased width for the swinging jaw atits bearing, and allowing of a stouter nut and thicker or strongerhandle being used. The forked portions (1 (I should be made sufficientlydiverging to provide for a shank A of sufficient size being used to resist ordinary strain. The remaining portion of the jaw D, which narrowstoward its outer end', should be of corresponding width, or thereabout,with the head 0. This portion, as illustrated in Figs. 1 and 2, is ofhook form, and is serrated internally on its concave face, which may beof a quarter of a circle (more or less) in length, to give a firm andsteady grip on the pipe P as the wrench is worked in direction of thearrow 00. lVhen worked in a reverse direction, it releases its grip, asin the case of other pipe-wrencl1es hereinbefore referred to.

Instead of the swinging j aw D being of curved hook shape at its outeror gripping end, it may be of angular V form, as represented in Fi 3, soasto present two serrated angular grip- IOO the jaw.

pin g-surfaees, slightly curved where they meet each other and join theremaining portion of NVhen the jaw D is thus constructed, the wrenchwill have three bearing-surfaces on the pipe to which it may be applied.

The adjustment of the wrench is effected by turning its handle or byturning the nut with its attached jaw on the handle.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. In a wrench, the fast head or jaw O, having theopposite serrated sides, 0 c, in combination with a con cave swingingjaw, D, forked \Vitnesses:

WALTER W. GRAY, R. J. WA'rrnRs.

